Method to ensure the correct sequence of the threads or groups of threads in thread layers



ly 1952 s. s. c. FLEISCHER 2, ,8

METHOD TO ENSURE THE coRREcT SEQUENCE OR THE THREADS 0R GROUPS OFTHREADS IN THREAD LAYERS Filed July 9, 1947 Patented July 22, 1952METHOD TO ENSURE THE CORRECT SE- QUENCE OF THE THREADS OR GROUPS OFTHREADS IN THREAD LAYERS Svend Sigurd Christie Fleischer,Charlottenlund, Denmark Application July 9, 1947, Serial No. 759,896 InDenmark November 6, 1942 6 Claims.

The present invention relates to an improved method to ensure thecorrect sequence of the threads or groups of threads in a thread layer.

It has often been found necessary in the textile industry to ensure thecorrect sequence of the threads, or of groups of threads in a threadlayer during the various treatments these threads are subjected to. Thisrefers particularly to warps, and especially when'patterned ormulticoloured work has to be done.

The correct sequence of the threads, or of groups of threads in a threadlayer has hitherto been ensured by crossing the threads, 1. e. bypassing a pair of lease rods or cords across the threads, or groups ofthreads in such a manner that every other thread, or group of threadslies above the one and below the other lease rod or cord, whereas theremaining threads, or groups of threads pass below the one and above theother lease rod or cord. Two consecutive threads or thread groups willthus cross each other between the two lease rods or cords. Such acrossing of the threads or groups of threads will ensure their sequence,but these threads or thread groups will lie so closely together thatthere is some difficulty in separating the individual threads or threadgroups. Such an individual separation is necessary when the threads orgroup of threads are to be subjected to certain treat ments, forinstance when they are to be tied to the threads of another threadlayer, or when the threads are to be heddled in a loom.

When the threads are to be separated from the thread layer to be carriedthrough the heddles of a, loom they have to be held fairly taut and aretherefore held between two clamps. The tension of the clamps holding thefree ends of the threads must be so adjusted that the threads can easilybe pulled out of engagement therewith when being drawn through theheddle eye. It is, however, not possible to avoid the free ends of thethreads becoming entangled in the clamps, in which they will often crosseach other. Any thread pulled out of the clamps will therefore oftenpull one or more other threads along with it, and this causes delay inthe work.

The object of the invention is to remedy these drawbacks by means of amethod according to which each thread or group of threads of a threadlayer is entwined by the loops of stitches of thread in a connected rowof loops or stitches.

The loops or stitches, which in the following will be called stitches,may according to the invention be made of a single thread on twointerlaced threads. Accordlng to the invention only 2 some of thestitches in a row of stitches entwine threads, whereas the intermediatestitches do not entwine any threads.

The method according to the invention provides various advantages incomparison to any hitherto known method of ensuring the sequence ofthreads or groups of threads in a thread layer, because these threads orthread groups are spaced a greater distance from each other than thecase is when the threads are crossed.

Owing to the fact that stitches are very elastic it is possible bystretching .the row of stitches to increase the space between thethreads or group of threads within a shorter or longer portion of therow of stitches. This is important when the threads or groups of threadsare to be separated manually for their further treatment. Such aseparation takes place for instance, when the threads are to be heddledin a loom. Furthermore the stitches may be drawn so tightly around thethreads that the free ends of these threads are held withv sufficientfirmness during the extraction, and accordingly the clamps can bedispensed with. As each thread is tightly held by the stitches it willnot be possible for any thread to pull any other threads out with itwhen being extracted from the row of stitches.

The method according to the invention may likewise be employed withadvantage for separating the threads of a thread layer that aresubsequently to be tied to the threads of another thread layer. For thispurpose there is preferably used a row of stitches that comprises twointerlaced threads, stitches being formed alternately by the one and theother thread. By pulling one of these threads it is possible to undo astitch and thus release the entwined thread, whereas the succeedingthread can only be released when it is pulled. In this manner thesequence of the separated threads is completely ensured because nomistake in separation is possible.

In the accompanying drawing several explanatory examples of performingthe invention are shown.

Fig. 1 is a row of stitches in which each stitch entwines a thread in athread layer,

Fig. 2 is a row of stitches in which only every other stitch entwines athread in a thread layer,

Fig. 3 is a row of stitches formed by the interlacing of two threads,

Fig. 4 is a row of stitches in which each stitch entwines a group ofthreads in the thread layers.

In the row of stitches illustrated in Fig. 1 each stitch I is formed bymeans of the same single thread layers.

' thread 2, and each stitch entwines one of the threads '3 in a layer ofthreads. In the row of stitches illustrated in Fig. 2 all the stitches lare likewise formed by a single thread 2, but in this instance onlyevery otherstitch entwinesa thread 3 in a layer of threads, and there isthus obtained an increased space between the threads 3. If a furtherincrease of the space between the threads 3 is desired, the number ofintermediate stitches that do not entwine threads 3 is increased.

The threads 3 may be separated singly from the stitches I, e. g. bypulling each thread longitudinally out of the stitch engaging it. In therow of stitches shown in Fig. 3 the stitches 4 and 5 are made by meansof two interlaced threads 6 and 7. In order to distinguish the twothreads from each other in the drawing, the thread 6 is shown in fullline, and the thread i in dotted line.

In this manner of performance there may be intermediate stitches in therow of stitches that do not entwine threads 3, thus providing thedesired space between the threads 3. In this instance the threads 3 maybe extracted singly from the stitches by alternately pulling the freeends of the threads 6 and 7. Only one stitch at a time may be detachedby pulling out the threads 5 or i, i. e. the stitch which at any timelies outmost, because the succeeding stitch that is formed by the otherthread obstructs the way for a continued pulling out of the stitchesformed by.

the first thread; There is thus no possibility of an erroneousseparation of the threads.

By means of an implement provided with a hook that is inserted throughthe heddle eye the threads are caught singly between the two rows ofstitches, and are pulled through the heddle eye. The free ends of thethreads will thus'be pulled longitudinallyout of the outmost stitch row.In order. to be .able to yield a suitable resistance against theirextraction'from the stitches, each stitch should be drawn tightly aroundits thread 3. This is desirable insuch instances where the threads areto .be sub-,iected to further treatment groupwise. If desired severalrows of stitches may be placed beside each other in the thread layer forproducinga suitable hold on the threads 3. Such an increase of the rowsof stitches will serve to maintain a correct sequence of the threadseven if a thread formingthe stitches for some reason or other shouldbreak. In the production of patterned or multi-colored fabric, forinstance striped fabric, the threads 3 may be taken alternately singlyand/or in groups from several When the threads 3 in this manner andaccording to the desired pattern are entwined by, the stitches in therow of stitches, the correct sequence of the threads is completelyensured, and no fault inthis sequence can arise at a subsequentextraction of any single thread 3 from its stitch.

I claim:

1. In a' method of ensuring the correct sequence of warp threads in aWarp thread layer-as in the operation of heddling a loom, the step ofarranging the warp threads in correct sequence in a warp thread layer,and the step of running a row of looped stitches of thread transverselyacross the warp threads and enclosing the latter in the loops of thestitches.

2. In a method of ensuring the correct sequence of warp threads in awarp thread layer as in the operation of heddling a loop, the step ofarranging the warp threads in correct sequence in a warp thread layer,and the step of running a row of looped stitches of thread transverselyacross the warp threads and enclosing at least one of the Warp threadsin each loop of the row of stitches.

3. In a method of ensuring the correct sequence of Warp threads in awarp thread layer as in the operation of heddling a loop, the step ofarranging the warp threads in correct sequence in a Warp thread layer,and the step of running a row of looped stitches of thread transverselyacross the warp threads and enclosing each successive warp thread ineach successive loop of the row of stitches.

i. In a method of ensuring the correct sequence of warp threads in aWarp thread layer as in the operation of heddling a loop, the step ofarranging the Warp threads in correct sequence in a warp thread layer,and the step of running a row of looped stitches of thread transverselyacross the warp threads and enclosing the successive Warp threads inevery other loop of the row of stitches.

5. In a method oi ensuring the correct sequence of warp threads in awarp thread layer as in the operation of heddling a loom, the step ofarranging the warp threads in correct sequence in a warp thread layer,and the step of running a row of looped stitches of thread transverselyacross the warp threads and enclosing groups of the warp threads in theloops of the row of stitches, a

6. In a method of ensuring the correct sequence of Warp threads in awarp thread layer as in the operation of heddling a loom, the step ofarranging the warp threads in correct sequence in a Warp thread layer,and the step of running a row of looped stitches of two interlacedthreads transversely across, the warp threads and enclosing the latterin the loops of the row of stitches.

SVEND SIGURD CHRISTIE FLE ISCHER.

REFERENCES orrsn The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

